Journal Article

FZJ-2017-01615

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png SiGeSn Ternaries for Efficient Group IV Heterostructure Light Emitters

von den Driesch, N. (Corresponding author)FZJ* ; Stange, D.FZJ* ; Wirths, S. ; Rainko, D.FZJ* ; Povstugar, I.FZJ* ; Savenko, A.FZJ* ; Breuer, U.FZJ* ; Geiger, R. ; Sigg, H. ; Ikonic, Z. ; Hartmann, J.-M. ; Grützmacher, D.FZJ* ; Mantl, S.FZJ* ; Buca, D. M. (Corresponding author)FZJ*

2017
Wiley-VCH Weinheim

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Please use a persistent id in citations: http://hdl.handle.net/2128/18661  doi:10.1002/smll.201603321

Abstract: SiGeSn ternaries are grown on Ge-buffered Si wafers incorporating Si or Sn contents of up to 15 at%. The ternaries exhibit layer thicknesses up to 600 nm, while maintaining a high crystalline quality. Tuning of stoichiometry and strain, as shown by means of absorption measurements, allows bandgap engineering in the short-wave infrared range of up to about 2.6 µm. Temperature-dependent photoluminescence experiments indicate ternaries near the indirect-to-direct bandgap transition, proving their potential for ternary-based light emitters in the aforementioned optical range. The ternaries' layer relaxation is also monitored to explore their use as strain-relaxed buffers, since they are of interest not only for light emitting diodes investigated in this paper but also for many other optoelectronic and electronic applications. In particular, the authors have epitaxially grown a GeSn/SiGeSn multiquantum well heterostructure, which employs SiGeSn as barrier material to efficiently confine carriers in GeSn wells. Strong room temperature light emission from fabricated light emitting diodes proves the high potential of this heterostructure approach.

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Contributing Institute(s):

1. Halbleiter-Nanoelektronik (PGI-9)
2. JARA-FIT (JARA-FIT)
3. Analytik (ZEA-3)

Research Program(s):

1. 521 - Controlling Electron Charge-Based Phenomena (POF3-521) (POF3-521)

Appears in the scientific report 2017

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Database coverage:
; ; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; No Authors Fulltext ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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